5.5

CVE-2020-21913: debian debian_linux Use After Free

Modified
AliasesALPINE-CVE-2020-21913SUSE-SU-2022:3140-1SUSE-SU-2022:3141-1
Published 20-09-2021Last modified 14-10-2026

Vulnerability summary

CVE-2020-21913 is a medium (CVSS 5.5) Use After Free vulnerability in debian debian_linux. EPSS estimates a 1.21% chance of exploitation in the next 30 days, higher than 68.5% of scored vulnerabilities. 1 public exploit is recorded.

Priority
Routine

Not severe (CVSS 5.5, local access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
5.5/10
010
Medium · v3.1 (NVD)
EPSS score
1.21%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits1reference

Advisory lineage

Upstream 0 · Downstream 5 · Related 5
OPENSUSE-SU-2024:13127-1SUSE-SU-2023:3563-1SUSE-SU-2023:3563-2SUSE-SU-2023:3563-3SUSE-SU-2025:02079-1

Timeline

  1. 20-09-2021
    PublishedVulnerability first disclosed.
  2. 14-10-2026
    Last modifiedVulnerability information updated.

Description

International Components for Unicode (ICU-20850) v66.1 was discovered to contain a use after free bug in the pkg_createWithAssemblyCode function in the file tools/pkgdata/pkgdata.cpp.

CVSS metrics

5 scores · 4 sources · 2 versions

EPSS trend

Probability

1.21%

Chance of exploitation in the next 30 days

Percentile

69%

Versus all other CVEs

30-day change

No change 0.00 pp

From 1.21% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

1 found
  • referenceUnverified

    Exploit Reference (unicode-org.atlassian.net)

    Maturity: unknown

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: local access, no authentication, user interaction (CVSS vector). Other conditions: not stated in public data.

Suse12 products
  • icu&distro=SUSE Linux Enterprise Micro 5.1< 65.1-150200.4.5.1
  • icu&distro=SUSE Linux Enterprise Micro 5.2< 65.1-150200.4.5.1
  • icu&distro=SUSE Linux Enterprise Module for Basesystem 15 SP3< 65.1-150200.4.5.1
  • icu&distro=SUSE Linux Enterprise Module for Basesystem 15 SP4< 65.1-150200.4.5.1
  • icu&distro=SUSE Linux Enterprise Module for Legacy 15 SP3< 60.2-150000.3.12.1
Opensuse3 products
  • icu&distro=openSUSE Leap 15.3< 60.2-150000.3.12.1 | < 65.1-150200.4.5.1
  • icu&distro=openSUSE Leap 15.4< 60.2-150000.3.12.1 | < 65.1-150200.4.5.1
  • icu&distro=openSUSE Leap Micro 5.2< 65.1-150200.4.5.1
Debian2 products
  • icu< 63.1-6+deb10u2 | < 57.1-6+deb9u5 | < 67.1-2
  • debian_linuxEOL9.0 | 10.0
Alpine1 product
  • icu< 66.1-r0
Ubuntu1 product
  • icu< 52.1-3ubuntu0.8+esm2 | < 55.1-7ubuntu0.5+esm1 | < 60.2-3ubuntu3.2
Unicode1 product

6 vendors · 20 products

References

15 links
Show all 15 references